| Company | Location | Certifications | License # |
|---|---|---|---|
| Andy and Sons Service | Purcell, OK | Installer (Subsurface, Aerobic Spray) | 361 |
| Hays Services | Wayne, OK | Installer (Subsurface, Aerobic Spray) | 1157 |
| Jefco Construction | Purcell, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 334 |
| Leon Engdahl Construction | Purcell, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 138 |
| Red Dirt Septic | Edmond, OK | Installer (Subsurface, Aerobic Spray) | 1142 |
| Septic Near Me | Blanchard, OK | Installer (Subsurface, Aerobic Spray) | 1217 |
| Tribal Utilities LLC | Norman, OK | Septage Hauler | 914 |
7 companies in the Oklahoma DEQ certified septic installers and licensed septage pumpers/transporters are based in McClain County as of 2026-07-23. Companies based elsewhere in Oklahoma also commonly serve the county.
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